orca is a single-file, dependency-free Python CLI that dispatches parallel headless AI worker agents and collects their results as durable on-disk artifacts (prompt, log, clean output, session id, status). I run Claude Code (Opus) as the orchestrator: the expensive model plans and hands out small instructions, and cheap open-source models running in workers do the actual writing.
It's how I do large jobs on a tiny budget — for example, modularizing ~14k lines of code that a single Claude session can't hold. Full write-up on the blog: My AI Coding Setup.